Automatically disable dynamic route components from handling index routes

[weotch]

For instance, we don't want /pages/products/_product/_variant.vue to handle /products. I think this is a sane default, I can't think of many instances where the detail component also handles the listing view.

We currently handle this with something like:

# nuxt.config.coffee
export default

	# Customize the routes
	router: extendRoutes: (routes) ->

		# Make the slug required on these routes so the listing pages can
		# be towers
		detailRoutes = [ 'articles-article', 'recipes-recipe' ]
		for route in routes
			if route.name in detailRoutes
			then route.path = route.path.slice(0, -1)

I think this functionality gets added to https://github.com/BKWLD/cloak-boilerplate/blob/master/modules/routing.js and it just removes the ? at the end of all routes except _tower.vue so that dynamic parts are never optional.